Ye cannot drink the cup of the Lord, and the cup of devils; ye cannot be partakers of the Lord's table, and of the table of devils.
-I Corinthians 10:21
No man can serve two masters: for either he will hate the one, and love the other; or else he will hold to the one, and despise the other, Ye cannot serve God and mammon,
The church's duty (assigned to the ruling elders) to supervise the
Lord's table is important for the:
1. Welfare of the individual - that a person does not increase his condemnation (judgment) by eating and drinking unworthily, by sinning against Christ and His Holy Supper institution.
2. Purity of the church -that the standards of the church are not tarnished by approving of those who openly live offensive life styles or teach false doctrines.
3. Glory of God -that God's holy Name and institution be
not mocked by those revealing public unholiness.
We read of God's judgment upon the Corinthian church for permitting a desecration of the holiness of the Lord's Supper to take place. "For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord's body. For this cause many are weak and sickly among you, and many sleep"
(I Corinthians 11:29-30).
We read of God's instruction to put away, and not eat with, church members living in public sin. "But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat" (I Corinthians 5:11).
When Achan sinned, God punished Israel and declared to Joshua, "Therefore the children of Israel could not stand before their enemies, but turned their backs before their enemies, because they were accursed: neither will I be with you any more, except ye destroy the accursed from among you" (Joshua 7:12).